Question

An average score of 90 or above in an English course receives an A grade. A student has grades of 81, 87, 94, 93 on four tests. Find the range of scores on the fifth test that will give the student an A grade. (Let the maximum score on each test be 100. Enter your answer using interval notation.)

Answer 1

Answer:

95>=X <=100. More or equal to 95 or equal or less than 100.

Step-by-step explanation:

The Total of the first score is needed first

81+87+ 94+93=355

The total of this score

Let X be the 5TH score we are looking for

(355+ X)/5= 90

355+X= 450

X= 450-355

X= 95 the person needs to sore between 95 and 100 ( which is the highest possible score).